Abstract: Objective Based on the results of the symptom checklist-90（SCL-90）,to understand the overall mental health status and development trends of new recruits in high-altitude training in China,and provide reference for future investigations and research on SCL-90 mental health assessment of military officers and soldiers. Methods Review Manager 5.3 software was used to systematically evaluate the relevant investigation and research on SCL-90 of Chinese plateau（Xizang） recruits since the establishment of CNKI,VIP,Wanfang and other databases. Result A total of 12 articles were included,with 7 640 new recruits for high-altitude training. Meta-analysis results showed that among the combined effect sizes of SCL-90 factors of new recruits in high-altitude training,only somatization was positive with no statistically significant difference[d（95%CI）=0.01（-0.12-0.13）,P<0.05],and the other 8 items were all negative,the combined effects of obsessive-compulsive factor[d（95%CI）=-0.15（-0.26--0.03）,P<0.05],interpersonal sensitivity factor[d（95%CI）=-0.19（-0.35--0.03）,P<0.05],anxiety factor[d（95%CI）=-0.11（-0.22--0.01）,P<0.05],and psychiatric factor[d（95%CI）=-0.17（-0.30--0.05）,P<0.01] were significantly lower than the new recruit norm,but the effect level was lower. Conclusion Based on the results of SCL-90,the overall mental health status of new recruits in high-altitude training is higher than that of the 2000 version of the Chinese new recruits norm,with significant differences in compulsive factors,interpersonal sensitivity factors,anxiety factors,and psychiatric factors.

Key words: Symptom checklist 90, Plateau, Resident recruits, Meta-analysis